Red Hat Security Advisory: firefox security update

Fixed packages 3

Vulnerabilities 3

• Critical 9.8
  CVE-2026-8094

  Other issue in the WebRTC component

  Other issue in the WebRTC component. This vulnerability was fixed in Firefox ESR 140.10.2 and Thunderbird 140.10.2.

  Mozilla Firefox Thunderbird thunderbird Browsers Debian Wolfi
  May 7, 2026
• High 8.1
  CVE-2026-8092

  Memory safety bugs fixed in Thunderbird ESR 140.10.2 and Thunderbird 150.0.2

  Memory safety bugs present in Thunderbird ESR 140.10.1 and Thunderbird 150.0.1. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability wa…

  Mozilla Firefox Thunderbird thunderbird Browsers Debian Ubuntu Wolfi
  May 7, 2026
• High 7.3
  CVE-2026-8090

  Use-after-free in the DOM: Networking component

  Use-after-free in the DOM: Networking component. This vulnerability was fixed in Firefox 150.0.2, Firefox ESR 140.10.2, Firefox ESR 115.35.2, Thunderbird 150.0.2, and Thunderbird 140.10.2.

  Mozilla Firefox Thunderbird thunderbird Browsers Debian Ubuntu Wolfi
  May 7, 2026

References

• article
  https://access.redhat.com/security/updates/classification/#important
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2467706
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2467708
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2467709
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_19160.json
• report
  https://access.redhat.com/security/cve/CVE-2026-8090
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-8090
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-8090
• article
  https://www.mozilla.org/security/advisories/mfsa2026-41/#CVE-2026-8090
• article
  https://www.mozilla.org/security/advisories/mfsa2026-44/#CVE-2026-8090
• report
  https://access.redhat.com/security/cve/CVE-2026-8092
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-8092
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-8092
• article
  https://www.mozilla.org/security/advisories/mfsa2026-41/#CVE-2026-8092
• article
  https://www.mozilla.org/security/advisories/mfsa2026-44/#CVE-2026-8092
• report
  https://access.redhat.com/security/cve/CVE-2026-8094
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-8094
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-8094
• article
  https://www.mozilla.org/security/advisories/mfsa2026-41/#CVE-2026-8094
• article
  https://www.mozilla.org/security/advisories/mfsa2026-44/#CVE-2026-8094